http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55566
Bug #: 55566
Summary: [4.8 regression] [IA64] ICE during bootstrap (related
to recent "vec" re-implementation?)
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: g...@intrepid.com
Created attachment 28854
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28854
build failure: IA64 segv - first seen in r193595
GCC fails to build, due to a segmentation violation while compiling libgcc2
during the bootstrap phase on an IA64 (altix) running SuSE SLES 11.1. The
installed gcc compiler is "gcc (SUSE Linux) 4.3.4 [gcc-4_3-branch revision
152973]", which is the compiler used to initially build gcc.
Bisection indicates that this started to fail with this svn revision.
------------------------------------------------------------------------
r193595 | dnovillo | 2012-11-17 18:54:30 -0800 (Sat, 17 Nov 2012) | 537 lines
This patch rewrites the old VEC macro-based interface into a new one
based on the template class 'vec'. The user-visible changes are
described in http://gcc.gnu.org/wiki/cxx-conversion/cxx-vec.
[...]
It has continued to fail subsequent to that commit at least through 2012-11-30.
Since about 2012-11-27, the segmentation violations that trace back originating
through vec.h persist, but now the failure occurs when compiling a configure
test when beginning to build libgcc. This continues to fail for a recent
version of gcc trunk (r194044 2012-12-01).
An excerpt configure test failure traceback is as follows.
conftest.c: In function 'foo':
conftest.c:19:1: internal compiler error: Segmentation fault
}
^
0x4000000000b3b33f crash_signal
src/gcc/toplev.c:334
0x4000000000466f30 vec<df_ref_d*, va_stack, vl_embed>::space(unsigned int) cons
t
src/gcc/vec.h:842
0x4000000000466f30 vec<df_ref_d*, va_stack, vl_embed>::quick_push(df_ref_d* con
st&)
src/gcc/vec.h:947
0x4000000000466f30 vec<df_ref_d*, va_stack, vl_ptr>::quick_push(df_ref_d* const
&)
src/gcc/vec.h:1552
0x4000000000466f30 vec<df_ref_d*, va_stack, vl_ptr>::safe_push(df_ref_d* const&
)
src/gcc/vec.h:1565
0x4000000000466f30 df_ref_create_structure
0x4000000000466f30 df_ref_create_structure
src/gcc/df-scan.c:2804
0x4000000000467b3f df_ref_record
src/gcc/df-scan.c:2873
0x400000000046923f df_get_call_refs
src/gcc/df-scan.c:3403
[...]
More complete logs with trace back are attached.
